311434540000 has 120 divisors (see below), whose sum is σ = 766615017168. Its totient is φ = 124502400000.

The previous prime is 311434539967. The next prime is 311434540049. The reversal of 311434540000 is 45434113.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47536725 + ... + 47543275.

Almost surely, 2^311434540000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311434540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383307508584).

311434540000 is an abundant number, since it is smaller than the sum of its proper divisors (455180477168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311434540000 is an equidigital number, since it uses as much as digits as its factorization.

311434540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8958 (or 8935 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 311434540000 its reverse (45434113), we get a palindrome (311479974113).

The spelling of 311434540000 in words is "three hundred eleven billion, four hundred thirty-four million, five hundred forty thousand".